The aim was to raise money to help those affected by last week’s devastating tornado in the city of Moore, Oklahoma. The hour-long broadcast was shown on NBC, CMT, Bravo, and other channels. Throughout the show, viewers were urged to donate to United Way’s tornado relief fund.

The broadcast was packed with stellar performances, and there were numerous high points. One of them was certainly the duet between Voice coaches Shelton and Usher, who performed Michael Buble’s “Home.”

Several of the participants were either born, raised, or currently have homes in Oklahoma, including Shelton, Gill, Tedder, Lambert, Reba, and the Flatts’ Joe Don Rooney.

Gill sang a moving, solo acoustic version of “Threaten Me With Heaven,” while Reba performed with a full band on “Everyday People,” a song she cut with Carole King on her 2007 album Duets. Rucker performed “True Believers” and Tedder (who appeared without his OneRepublic bandmates) sang the song “Counting Stars” off the band’s latest album, Native.

Another moment that stood out came courtesy of Lambert. When the Texas native (and currently Oklahoma resident) took the stage to sing her powerful ballad “The House That Built Me” she was visibly emotional. And by the second verse, she was reduced to tears.